Well, I bought those used, so that's probably why they are so old. I looked for some on Summit and they woudln't ship until June, so if you are buying them new, I woudln't expect them to be "old".
Maybe the guy I bought them from didn't know any better. I certainly didn't. The tires look fine with the exception of the crack. I read an article about a guy who's tire exploded after 11 years and it left his car in pretty bad shape. Tire looked fine, felt fine, had plenty of tread left. Just old I guess.
These will be hitting the dumpster soon enough though. Better to be safe than sorry.
As far as the number, the first two numbers specify the week and the next two specify the year. So my tires were made on the 18th week of the year 2000; sometime in May of 2000. I was still in high school. They are THAT old. :hihi: